Machine for banding sheets



Jan. 19, 1932. J. MAGILL 1,842,135

MACHINE FOR BANDING SHEETS Filed May 27, 1931 s Sheets-Sheet 1 Jan. 19, 1932. J MAGILL MACHINE FOR BANDING SHEETS Filed May 27, 1931 '3 Sheds-Sheet 2 Jan. 19, 1932. J, MAGILL 1,842,185

MACHINE FOR BANDING SHEETS Filed May 27, 1931 3 Sheets-Sheet 3 Patented Jan. 19, 193 2" UNITED s'rA'n-zs.

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PATENT OFFICE .iomw mama, or BEVERLY, irassacrmsm'rs, ASSIGNO'IB. 'ro ras -rhyme ATKINS rum comm, or BURNSIDE, oommc'rroo'r, acoaroaarro n or commcncur FOB BANDIR'G SHEETS Application filed May 27', 1931. Serial No. 540,221.

This invention relates to amachine which is designed to wrap bands, preferably paper although they may be of other material, around a number of superposed sheets or '5 cards of paper or other material, for'packaging the sheets or cards. a

The object of the invention is to, provide a relatively simple, inexplensive and rapidly operating machme whic will receive and To feed'the quantities of loose sheets or cards to be packaged over 'a magazine containing the barids, and will-apply adhesive to and fold the bands-about the'Sheets or cards so as to hold the sheets or cards in the desired package form.

The machine illustrated as embodying the invention was primarily designed for packagin sheets of paper with paper bands, and

will e so described, although the inventionis not limited to the specificmaterials of i the sheets or bands to be packaged. In this machine there are means for receiving and locating the sheets to be banded and delivthe ands that are stacked in a magazine which has means for lifting the bands so that the uppermost is always at the proper level to be folded around the sheets. When a bundle of sheets is over the bands the ends of the top band are separated from the band underneath and, folded over the sheets, one end of the band as it is folded being engaged with ,means which applies adhesive so that ends of the bands about fine sheets. Fig. 5 is a frontelevation of the band folding means. Fig. 6 is a side elevation of the-band folding means and mming means. Fig. 7 is a view of the band folding mechanisms in the posieringJ them to means which conveys them over 4 shows a plan of the means for folding the tions occupied when an end of a band being folded is engaging the adhesive applying means. Fig."8' 1s a diagram illustrating the i band folders as they start. Fig. 9 is a diagram showing the folders a little further advanted. F1 10 is a diagram showin one end of a ban completely folded an the other end engaging the gumming means. Fig. 11 shows the position of the folders with a'band completely folded and adhered. Fig. 12 is a view showing the means for separating the ends of the top band from the band underneath so that the folding fingers mag pass under the top band.

- number of superposed sheets of paper 1 to be banded are placed on-a pair of swin ing arms 2 that are pivoted on a shaft 3 at t e rear of the machine, Fig. 1. The arms have gauge fingers 4 for ensuring the correct location of the sheets on the'arms. One of the arms has a roll 5 that is engaged by a cam 6 fixed on a shaft 7 which extends across the frame.

Between the sheet receiving arms is an endless chain 8 that passes around a sprocket wheel 9 fastened on the shaft 7, and a driving sprocket wheel 10 fastened on a shaft 11. It is preferred to have the distance from center to center of the sprocket wheels exactly equal to the length of the 'pitch circle of the driving sprocket, for the reason hereinafter mentioned. This chain at the required distances apart has push fingers 12. The cam 6 at the proper time raises the arms for receiving'the sheets and then allows them to swing down and deposit the .eheetsov'enthe chain with their edges restingon guiderails 13 which are adj ustably fastened to the frame, in such position that when a finger on the chain comes along it pushes the sheets along the rails to a locality over the bands 14, Figs. 1, 2. 1

The shaft 11 with the sprocket wheel 10, is driven through the worm wheel 15 and a clutch 16, the clutch members being normally kept in engagement by a spring 17. Pivoted at one side of the machine is a" lever 18 that at its upper end has an arm 19 which carries by the chain. The sliding member of the c utch has a cam 21 and a cam groove 22.

a roll 20 over the path of the sheets conveyed The lever 18 at its lowerend has a shoe 23 engaged by the cam 21, and it has a roll 24 which is adapted to enter the cam groove 22. The high part of the cam 21 lifts the roll 20 and the low part allows the roll 20 to drop at each rotation of the shaft 11. If paper is being fed the roll 20 engages it and retains the lever 18 so that the roll 24 will not enter the cam groove 22, but if no paper is being carried by the chain the roll 20 drops sufficiently for the roll 24 to enter the cam roove 22 and then this cam causes the with rawal of the movable member of the clutch so that the machine will stop. If the distance from center to center of the sprocket wheels is equal to the pitch circle of the driving sprocket, as above suggested, the feed chain moves that distance at each complete cycle of the machine, making it .impossible, in combination with the stop mechanism, to cause waste of bands by allowing a second cycle of the motion if no paper is fed in.

The bands 14 are cut to suitable width and length and are piled in a magazine 25 at the front of the machine. The bottom 26 of the magazine is lifted by springs 27 on rods 28 that are connected with levers 29 which are fastened to a shaft 30 that extends across the frame. Connected with this shaft is a treadle 31, Fig. 6. When the treadle is pressed down the springs are compressed and the bottom of the magazine is lowered so that the bands may be placed in the magazine. The springs normally lift the magazine bottom so that the uppermost band is just beneath the sheets of paper which are fed over the ma azine by the conveyer chain. Small spring ngers 32 are arranged at the top of the magazine near the ends to prevent the bands from being lifted too high, Fig. 2.

In the machine illustrated there are four fingers 33 carried by the upper ends of angle levers 34 in such manner that they will bear down upon the top band on opposite sides near the ends. The front and back angle levers are connected together, Fig. 6, and the rear pair have rolls 35 that are engaged by cams 36 on the drive shaft. At the proper time these cams swing these fingers transversely across the top band and by friction cause its ends to bow up, as shown in Fig. 12.

Movable toward each other from side to side over the band magazine are slides 37, 38, which carry folder blades 39, 40. A cord 41 is connected with the slide 37 and passed around rolls 42, 43, the latter of which is mounted on the upper end of a lever 44 pivoted on a stud 45 that projects from one side of the rear frame. This lever has a roll 46 that is engaged by a cam 47 on the drive shaft. Connected to the slide 38 is a cord 48 which passes around rolls 49, 50, the latter of which is mounted on the upper end of the lever 51 which is also pivoted on the stud 45. This lever has a roll 52 that is engaged by a cam 53 on the drive shaft. These cams47, 53 are so timed that the levers throu h the cords first move the slide 38 with the Folder blade 40 in under one uplifted end of the uppermost band, as shown in Fig. 8. As this blade continues to move in the blade 39 on the slide 37 enters beneath the other lifted end of the band, as shown in Fig. 9. The continued movement of the blade 40 completes the folding of one end of the band down upon the gapeqand the continued movement of the lade 39 causes the other end of the band to fold over, and while being folded to engage with a tube 54 which leads from a reservoir 55, Fig. 6, containing adhesive, so that a small coating of adhesive is ap lied to the under side of this latter end 0 the band as it is folded over, as indicated in Fig. 10. Further movement of the blade 39 completes the folding of the gummed end of the band and presses it down on the other end, causing the ends to adhere. The adhesive reservoir is mounted on a support 61 that extends upward from the frame. The slide 37 with the blade 39 is retracted by the weight 57 fastened to the end of the cord 58, and the slide 38 with the blade 40 is retracted by the weight 59 attached to the cord 60. These weights hold the operating levers against the actuating cams.

The mechanism described feeds the sheets and folds the bands about them very rapidly and accurately, and should there be a failure of feed of sheets the machine will stop without waste of bands.

The invention claimed is:

1. A machine for banding sheets which comprises a magazine for receiving bands, means for receiving and conveying the sheets over said magazine, means for raising the ends of the top band from the band below, means for entering beneath said raised ends of the top band and folding the ends over on -the sheets, and means for applying gum to one of said band ends as it is folded over and down upon the other end.

2. A machine for banding sheets which comprises a magazine for receiving bands, means for raising the bottom of said magazine so that the uppermost band will always be at the same level, means for receiving and conveying sheets over said magazine, means for raising the ends of the top band from the band below, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, and means for applying gum to one of said band ends as it is folded over anddown upon the other end.

3. A machine for banding sheets which comprises a magazine for receiving bands, means for receiving and conveying sheets over said magazine, means for raising the ends of the top band from the band below, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, means for applying gum to one of said band ends as it is folded over and down upon the other end, a driving mechanism which in cludes a clutch, and means for releasing said clutch if no sheets are conveyed to a position over the bands.

4. A machine for banding sheets which comprises a magazine for receiving bands, means for conveying sheets over said magazine, means for receiving sheets and placing them in the path of said conveying means, means for raisin" the ends of the to band from the band be low, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, and means for applying gum to one of said band ends as it is folded over and down upon the other end.

5. A machine for banding sheets which comprises a magazine for receiving bands, an endless chain for conveying sheets over said magazine, oscillatory ngers for receiving the sheets and depositing them in the path of said chain, means for raising the ends of the top band from the band below, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, and means for applying gum to one of said band ends as it is folded over and down upon the other end.

6. A machine for banding sheets which comprises a magazine for receiving paper bands, an endless conveyor for receiving and carrying sheets over said magazine, means for raising the ends of the top band from the band below, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, means for applying gum to one of said band ends as it is folded over and down upon the other end, a driving mechanism which includes a clutch, an arm adapted to oscillate across the path of the sheets being carried by the conveyer, and means connected with said arm and adapted to release said clutch wherever said arm swings below the path of the sheets.

7. A machine for banding sheets which comprises a magazine for receiving bands, means for receiving and conveying sheets over said magazine, fingers engaging opposite edges near both ends of the top band for separating the ends from the band below, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, and means for applying gum to one of said band ends as it is folded over and down upon the other end.

8. A machine for banding sheets which comprises a magazine for receivingbands, means for receiving and conveying sheets over said magazine, means for raising the ends of the top band from the band below, a slide movable toward and from each end of the bands, folding blades carried by said slides and adapted to enter beneath said raised ends of the top band and fold them over on the sheets, and means for appl ing over said magazine means for raising thev ends of the top band from the band below, a slide movable toward and from each end of the bands, cords, levers and cams for movin said slides toward each other and cords an weights for moving said slides away from each other, blades carried by said slides and adapted to enter beneath said raised ends of the top band and fold the ends over on the sheets, and means for applying gum to one of said band ends as it is folded over and down upon the other end.

10. A machine for handing sheets which comprises a magazine for receiving bands, an endless chain for receiving and carrying sheets over said magazine, means for raising the ends of the top band from the band below, slides movable back and forth transversely to the path of said chain, blades carried by said slides for entering beneath said raised ends of the top band and folding the ends over on the sheets, and means for applying-gum to one of said band ends as it is folded over and down upon the other end.

11. A machine for handing sheets which comprises a magazine for receiving bands, means for receiving and conveying sheets over said magazine, fingers engaging opposite edges near both ends of the top band for separating the ends from the band below, blades for entering beneath said raised ends of the top band and folding the ends over on the sheets, and gumming means extending into the path of one end of the top band as it is folded over and down upon the other end.

12. A machine for banding sheets which comprises a magazine having a vertically movable bottom for supporting bands, springs normally tending to lift said bottom, a treadle connected to the magazine bottom and adapted to lower the same against the tension of the springs, means for receiving and conveying the sheets over said magazine, means for raising the ends of the top band from the band below, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, and means for applying gum to one of said band ends as it is folded over and down upon the other end.

13. A machine for banding sheets which comprises a magazine for receiving bands, an endless chain passing around sprocket wheels for conveying sheets over said magazine, the distance between the centers of said sprocket wheels being equal to the pitch diameter of said wheels, means for receiving sheets and placing them in the path of said chain means,

means for raisin the ends of the top band from the band be ow, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, and means for applying gum to one of said band ends as (it is folded over and down upon the other en v 14:. A machine for banding sheets which comprises a magazine for receiving bands, means for receiving and conveying sheets over said magazine, means engaging opposite edges near both ends of the top band for separating said band ends from the band below, blades for entering beneath said raised ends of the top band and first folding one end over on the sheets and then folding the other end over the sheets and pressing it down on the end first folded, and gumming means extending into the path of the end of the top band last folded over.

15. A machine for banding sheets which comprises a magazine for receiving paper bands, an endless conveyer for receiving and carrying sheets over said magazine, means for raising the ends of the top band from the band below, means for entering beneath said raised ends of the top band and folding the ends over on the sheets, means for applying gum to one of said band ends as it is folded over and down upon the other end, a driving mechanism, an arm adapted to move into the path of the sheets being carried by the conveyer, and mechanism connecting said arm and driving mechanism and adapt ed to disconnect the driving mechanism wherever said arm swings below the path of the sheets.

JOHN MAGILL 

